Belleville, IL 62221 solar market data
Updated September 15, 2026 By The SolarDNA Data Team
Belleville 62221 has 521 solar installations, installations down 14.9% over the trailing twelve months, and a Market Score of 40 — higher than 34% of U.S. zip markets.
Versus Illinois
How 62221 compares with the state
Installed cost
—
state median $6.56/W
Market score
40 vs 43
Illinois scores 43
Share of state installs
0.46%
of 112.7K tracked statewide
Battery attach
0.0%
state 0.0%
Statewide momentum
▲ 23.1%
residential solar added in Illinois, 12 months through Jul 2026
Statewide market
136.9K systems
4.0% of homes · utility-reported through Jul 2026
Next-12-month outlook: 105–129 installs (midpoint 117)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±10% band. Not a forecast of permits or policy.
Growth & pricing
62221 by year
126 installs in the trailing twelve months vs 148 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 62221
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | LGCY POWER | 21 | 17 | 10.12 | — |
| 2 | SUN SOLAR | 21 | 4 | 10.57 | — |
| 3 | GOODPWR | 19 | 18 | 12.04 | — |
| 4 | GREEN GRIDS SOLAR | 14 | 14 | 11.41 | — |
| 5 | FREEDOM FOREVER | 14 | 11 | 10.4 | — |
| 6 | STRAIGHTUP SOLAR | 7 | 3 | 10.37 | — |
| 7 | ADVANCED RENEWABLE CONCEPTS | 7 | 2 | 10.99 | — |
| 8 | SPARC SOLAR | 6 | 6 | 9.56 | — |
| 9 | JESSCO ENTERPRISES | 6 | 3 | 10.9 | — |
| 10 | MIDWEST SOLAR SOLUTIONS | 6 | 3 | 8.87 | — |
| 11 | AMBIA ENERGY | 4 | 4 | 9.06 | — |
| 12 | SOLAR CITY STL | 4 | 4 | 12.81 | — |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 62226 Belleville | 3.7 km | 280 | — | 55 |
| 62220 Belleville | 3.8 km | 169 | — | 42 |
| 62269 O Fallon | 6.5 km | 752 | — | 42 |
| 62223 Belleville | 6.9 km | 165 | — | 49 |
| 62208 Fairview Heights | 7.6 km | 155 | — | 42 |
| 62232 Caseyville | 11.6 km | 95 | — | 41 |
Same city
Other zips in Belleville
Frequently asked
Quick answers about 62221
How many solar installations are there in 62221?
SolarDNA counts 521 active solar installations in Belleville 62221, 504 of them residential, with data through September 15, 2026.
How much does solar cost in 62221?
Not enough priced systems in 62221 to report a median.
Is solar growing in 62221?
Installations in 62221 are down 14.9%: 126 in the trailing twelve months versus 148 before.
Who installs solar in 62221?
LGCY POWER, SUN SOLAR, GOODPWR lead the 62 installers with systems in 62221. The full comp set is above.
Is 62221 a good market for solar sales?
62221 scores 40 out of 100 (Good, higher than 34% of U.S. zip markets).